Add the infrastructure to connect to the eventfs filesystem andcreate a event directory. Currently, all events are flat. That isthere is no hierarchy. Each stable event has its own directoryin /sys/kernel/events (after the eventfs is mounted there).

Currently only one file exists in each of the event directories.This file is the format file. The format shows each itemin the stable event. The name of that item, the item's type,the size of the item (in bits), the count of entries of the item(if that item is an array), the alignment needed for that item tobe read (arch specific) and the sign of the item.